Chert with Chalcedony Pendant

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Chert with chalcedony from Lake Michigan shaped and polished into a cabochon and placed into a sterling silver pendant.

Chert is a fine-grained sedimentary rock composed of microcrystalline or cryptocrystalline silica.

Chalcedony is a cryptocrystalline form of silica, composed of very fine intergrowths of quartz and moganite. These are both silica minerals, but they differ in that quartz has a trigonal crystal structure, while moganite is monoclinic. Chalcedony's standard chemical structure (based on the chemical structure of quartz) is SiO2 (silicon dioxide).

Calming stone, especially for public speakers.  Beneficial for lawyers, politicians and actors.

Click here to see more metaphysical properties of stones.

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